MANLEY RACE MASTER Stainless Valves [Type Exh. | Head Diameter 31mm | Stem Diameter .2740 | Installed Height Stock | O/A Length 4.587 | Tip Length .425 | Underhead Angle/Radius 15 x 1/2 | Margin .050 | Seat Width .080 | Top of Head 9 Dish | Wgt/Grams 55] (FORD 4.6L & 5.4L 4V MOD) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS